US1397923A - Window-sash fastener - Google Patents

Description

J. P. CROSBY.

WINDOW SASH FASTENER.

APPLICATION man DEC. s, 1919.

Patented Nov. 22, 1921.

Te 9 Ate}; 6

n w o m 0 p mP m NWHWNWWWWNW UNITED STATES PATENT OFFICE.

WINDOW-SASH FASTENER.

Application filed December 8, 1919.

T 0 all whom it may concern:

. Be it known that T, JOHN P. CROSBY, a citizen of the United States, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Improvemerits in \l iIidow-Sash Fasteners, of which the following is a specification.

My invention relates to window sash fasteners and has for its object to provide a simple and efiicient device which will lock two sashes together in their closed, or in any desired open position for regulating the air supply to a room and still be secure from intruders.

A. further object of the invention is to provide means which will aline the two window sashes when locked together and to spread the sash so as to cause them to bind against the window frame stops to stop air leakage around the sides of the sash and to prevent their being moved until the fastener has been released.

With theabove and other objects in view, the invention consists in certain novel features of construction, arrangement and combination of parts hereinafter described and finally pointed out in the claim hereto appended.

Referring to the accompanying drawings forming a part of this specification wherein like characters of reference denote similar parts throughout the several views:

Figure 1, is a front elevation showing a window sash to which my invention is applied.

Fig. 2, is a vertical sectional view of a part of the window sash.

Fig. 3, is a sectional view taken on line 3-3 of Fig. 1.

Fig. 1, is a plan view of the fastener applied to a window sash.

Fig. 5, is a top plan view of the bolt holder.

Fig. 6, is an elevation of the locking bolt.

Referring to the drawings, the reference character 1 designates the upper sash; 2, the lower sash, and 3, the sash stops.

In carrying out the aim of my present invention, I provide the upper sash 1 with a metallic strap 4 having a plurality of transverse slotted openings 5 and central counter sunk portions 5' arranged at spaced intervals along the full length of the strap l. The strap 4: is suitably fixed to the sash, as is manifest.

6 represents a suitable bolt holder having Specification of Letters Patent.

Patented Nov. 22, 1921.

Serial No. 343,387.

the ears 7 and a screw threaded opening 8. The holder is fixed to the top face of the meeting rail 9 of the lower sash by means of screws, or the like 10.

11 indicates a suitable screw threaded locking bolt having one end reduced to form a nonthreaded stud or projection 12. The end of the bolt 11 may be rounded off, as at 13, also the end of the stud may be rounded, as at 14. The other end of the bolt 11 is provided with a suitable thumb-piece 15 for convenience of turning the locking bolt 11. The locking bolt 11 is carried in the screw threaded opening 8 of the holder 6, as is manifest. The holder is fixed to the lower sash adjacent the slotted strap 4:, as shown in Figs. 1 and 3.

The operation of the device is as follows:

lVhen either sash has been moved to the position desired, the locking bolt 11 is turned so as to move the bolt in direction of the slotted strap 4:. The reduced end 12 of the locking bolt 11 will enter the slotted opening 5 in alinement therewith and when the bolt 11 has been tightened as much as possible, the end 15 of the bolt 11 will engage the counter-sunk seats 5, as is manifest, causing the side rails of the'sash to bind tightly against the sash-guides, or stops 3 to frictionally lock the sash against movement until the lock bolt has been loosened.

All sashes have side slap or lateral movement owing to their more or less loose fit, and, if the two sashes are out of vertical alinement when the bolt 11 is tightened, they will be drawn into vertical alinement just as soon as the end 13 of the bolt 11 engages the counter-sunk seat 5 of the strap 4, as is manifest. No matter how much the sashes are out of alinement, the projection, or stud 12 will enter the slotted opening and when the end 13 of the bolt 11 comes into contact with the counter-sunk seat, the sash will be crowded or drawn into alinement, as is manifest. The sashes when locked are perfectly stationary against movement owing to forced contact with the sash guides 3, and this forced contact will prevent any rattling of the sash and will also prevent air from entering the room around the side rails of the sash.

It is evident from the foregoing description, that the device is simple in construc tion, easily applied to the sash, conveniently operated and that it not only serves to lock the sash in desired position, but also serves to prevent any rattle of the window sash.

The many advantages of the herein described invention will readily suggest themselves to those skilled in the art to which the invention appertains.

I do not wish to be understood ashaving limited myself to the details of construction shown and described, but desire to have it understood that the invention I have shown in the drawings is merely illustrative, as it is manifest that various minor changes may be made in the exact construction and particular arrangement of parts without departing from the spirit of my invention, hence I reserve the right to make any such changes or modifications as may fairly fall within the scope of the appended claims when fairly construed.

What I claim is:

In a window sash lock, the combination with an interiorly screw-threaded holder fixed to the meeting rail of the lower sash, a

metallic strap member fixed to one of the side rails of the upper sash, said strap memher being provided witha plurality of suitably spaced horizontally disposed slotted openings and each strap member being provided upon its outer face centrally of the horizontal slotted openings with a counter sunk seat, a screw-threaded locking bolt carried by the screw-threaded holder fixed to the meeting rail of the lower sash, a cylindrical stud of less diameter than the screwthreaded portion of the locking bolt and extending inwardly from the inner end of said bolt to form a shoulder at the junction of said stud with the screw-threaded portion of said bolt, said cylindrical stud adapted to engage in a slotted opening of the strap member and the shoulder of said bolt adapted to frictionally engage the counter sunk seat of the strap member for forcing the window sash into vertical alinement and said stud and shoulder both acting to lock the sash together and prevent movement of either sash in either direction.

In testimony whereof, I have hereunto signed my name to the specification.

JOHN P. CROSBY,

Images